62 lines
1.5 KiB
Go
62 lines
1.5 KiB
Go
package session
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import (
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"context"
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"crypto/ecdsa"
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"github.com/nspcc-dev/neofs-api-go/service"
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crypto "github.com/nspcc-dev/neofs-crypto"
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"google.golang.org/grpc"
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)
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type gRPCCreator struct {
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conn *grpc.ClientConn
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key *ecdsa.PrivateKey
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clientFunc func(*grpc.ClientConn) SessionClient
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}
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// NewGRPCCreator unites virtual gRPC client with private ket and returns Creator interface.
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//
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// If passed ClientConn is nil, ErrNilGPRCClientConn returns.
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// If passed private key is nil, crypto.ErrEmptyPrivateKey returns.
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func NewGRPCCreator(conn *grpc.ClientConn, key *ecdsa.PrivateKey) (Creator, error) {
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if conn == nil {
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return nil, ErrNilGPRCClientConn
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} else if key == nil {
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return nil, crypto.ErrEmptyPrivateKey
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}
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return &gRPCCreator{
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conn: conn,
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key: key,
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clientFunc: NewSessionClient,
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}, nil
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}
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// Create constructs message, signs it with private key and sends it to a gRPC client.
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//
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// If passed CreateParamsSource is nil, ErrNilCreateParamsSource returns.
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// If message could not be signed, an error returns.
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func (s gRPCCreator) Create(ctx context.Context, p CreateParamsSource) (CreateResult, error) {
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if p == nil {
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return nil, ErrNilCreateParamsSource
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}
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// create and fill a message
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req := new(CreateRequest)
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req.SetOwnerID(p.GetOwnerID())
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req.SetCreationEpoch(p.CreationEpoch())
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req.SetExpirationEpoch(p.ExpirationEpoch())
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// sign with private key
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if err := service.SignDataWithSessionToken(s.key, req); err != nil {
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return nil, err
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}
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// make gRPC call
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return s.clientFunc(s.conn).Create(ctx, req)
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}
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